If 40.0 grams of zinc react with excess hydrochloric acid, how many grams of zinc chloride will be produced?

Matches the chemical name of each oxide of phosphorus to its chemical formula

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.